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Latest recorded position: #6 on Jul 24, 2026, 8:14 PM CST.
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Why Are Jet Engines So Hard to Build? Only Five Countries Can Make Them Independently
航空发动机究竟有多难？世界上仅有5个国家可以独立制造
ThreadEast first recorded "Why Are Jet Engines So Hard to Build? Only Five Countries Can Make Them Independently" on Jul 24, 2026, 8:14 PM CST. It has been observed on NetEase News, with less than one hour between the first and latest recorded appearances.
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